Valve-lifter.



E. L. cAsE. VALVE LIFTER.

Y APPLICATION FILED .IUIIE I4. ISIS. I

Patented Feb.v8, 1916.

- f/efsr L; caff y UNITED STATES lPATENT OFFICE.

ERNEST L. CASE, OF MINNEAPOLIS, MINNESOTA.

VALVEFLIFTER.

Specification of Letters Patent.

Patented Feb. S, 191.6.

Application led J' une 14, 1915. Serial No. 34,052.

T 0 all whom t may concern.' Be it known that I, ERNEST L. CASE, citizenof the United States, resident of Minneapolis, county of Hennepin, Stateof Minnesota, have invented certain new and useful Improvements inValveLifters, of which the following is a specification.

My invention relates to tools for handling seat, showing the tool inposition for re` moving the valve, Fig. 2 is a sectional view on theline -m of Fig. l, Fig. 3 is an enlarged detail view of the jaws of thetool. Fig, l is a detail view, showing the tool adapted for removing thevalve in another way.

In the drawing, 2 represents a valve having a seat 8. It is oftennecessary to remove these valves from an engine for the purpose ofgrinding oi' cleaninv them or for repairs and it sometimes is diilcultto effect this removal easily and conveniently. I ytherefore provide atool having jaws 4 and 5 pivotally connected at 6 and provided withhandles 7 and 8. These jaws are wedgeshaped in cross section, asindicated in Fig. 2, with their tapered edges arranged to lap by oneanother when the jaws are closed. The disk of the valve is provided witha slot 9 therein adapted to receive the 'ends of the jaws and when thehandles are pressed together the lapping edges of the jaws will slideupon one another and their outer faces will be forced yagainst. thewalls of the slot and clamped firmly thereon, and the harder the handlesare squeezed together the greater will be the outward pressure of thejaws on the walls ofthe slot, and when these jaws have been securelyclamped, an upward pull on the tool will remove the valve from its seat.

In some cases the valve disk is provided with holes l() therein and Itherefore provide the ends of the handles with roughened faces l1 whichare adapted to engage the walls of these holes when the tool isinverted, and by pressing these handles together suficient friction maybe produced between the roughened surfaces and the walls of the holes toenable the operator `herein shown and described may be modified andstill be within the scope of my invention.

I claim as my invention:

l. A valve lifting tool having handles pivotally connected to oneanother and provided with jaws, wedge-shaped in cross section andadapted to lap by one another and having ends for entering a slot in thevalve disk, for the purpose specified.

2. A valve lifting tool having jaws provided with ends forrentering aslot in the valve disk, said jaws lapping by one another and formed toexert'when squeezed together an outward pressure on the walls of theslot, substantially as described.

3. A valve lifting tool comprising handles y having jaws for grippingopposing walls provided in the upper surface of a valve disk.

el.. A valve lifting tool having jaws adapted to enter a slot ina valvedisk, said jaws being formed to exert when closed ,an outward pressureon the walls of the slot to lock the tool therein.

In witness whereof, I have hereunto set my hand this 11th day of J une1915.

ERNEST L. CASE.

Copies of this patent may he obtained for ive cents each, by addressingth@ Commissioner 0f Paten,

' Washington, D. G.

